plomlompom.com Git - plomrogue/blob - src/main.c

   1 /* main.c */
   2
   3 #include "main.h"
   4 #include <stdlib.h> /* for atoi(), exit(), EXIT_FAILURE, calloc() */
   5 #include <stdio.h> /* for FILE typedef, F_OK, rename() */
   6 #include <ncurses.h> /* for initscr(), noecho(), curs_set(), keypad(), raw() */
   7 #include <time.h> /* for time() */
   8 #include <unistd.h> /* for unlink(), getopt(), optarg */
   9 #include <stdint.h> /* for uint8_t */
  10 #include "windows.h" /* for structs WinMeta, Win, init_win(), init_win_meta(),
  11                       * draw_all_wins()
  12                       */
  13 #include "draw_wins.h" /* for draw_keys_win(), draw_map_win(), draw_info_win(),
  14                         * draw_log_win()
  15                         */
  16 #include "keybindings.h" /* for initkeybindings(), get_action_key() */
  17 #include "readwrite.h" /* for [read/write]_uint[8/16/32][_bigendian]() */
  18 #include "map_objects.h" /* for structs Monster, Item, Player,
  19                           * init_map_object_defs(), read_map_objects(),
  20                           * build_map_objects()
  21                           */
  22 #include "map_object_actions.h" /* for player_wait(), move_player() */
  23 #include "map.h" /* for struct Map, init_map() */
  24 #include "misc.h" /* for update_log(), toggle_window(), find_passable_pos(),
  25                    * meta_keys(), save_game()
  26                    */
  27 #include "yx_uint16.h" /* for dir enum */
  28 #include "rrand.h" /* for rrand(), rrand_seed() */
  29 #include "rexit.h" /* for exit_game() */
  30
  31 int main(int argc, char *argv[])
  32 {
  33     struct World world;
  34     char * recordfile_tmp = "record_tmp";
  35     char * savefile_tmp   = "savefile_tmp";
  36     char * err_x = "A file 'recordfile_tmp' exists, probably from a corrupted "
  37                    "previous record saving process. To avoid game record "
  38                    "corruption, I won't start until it is removed or renamed.";
  39     exit_err(!access(recordfile_tmp, F_OK), &world, err_x);
  40     err_x        = "A file 'savefile_tmp' exists, probably from a corrupted "
  41                    "previous game saving process. To avoid savegame "
  42                    "corruption, I won't start until it is removed or renamed.";
  43     exit_err(!access(savefile_tmp,   F_OK), &world, err_x);
  44
  45     /* Read in startup options (i.e. replay option and replay start turn). */
  46     int opt;
  47     uint32_t start_turn;
  48     world.interactive = 1;
  49     while ((opt = getopt(argc, argv, "s::")) != -1)
  50     {
  51         switch (opt)
  52         {
  53             case 's':
  54                 world.interactive = 0;
  55                 start_turn = 0;
  56                 if (optarg)
  57                     start_turn = atoi(optarg);
  58                  break;
  59             default:
  60                 exit(EXIT_FAILURE);
  61         }
  62     }
  63
  64     /* Initialize log, player, monster/item definitions and monsters/items. */
  65     world.log = calloc(1, sizeof(char));
  66     set_cleanup_flag(CLEANUP_LOG);
  67     update_log (&world, " ");
  68     struct Player player;
  69     player.hitpoints = 5;
  70     world.player = &player;
  71     world.monster = 0;
  72     world.item = 0;
  73     init_map_object_defs(&world, "defs");
  74
  75     /* For interactive mode, try to load world state from savefile. */
  76     char * err_o = "Error loading game: "
  77                    "Unable to open 'savefile' for reading.";
  78     char * err_r = "Error loading game: "
  79                    "Trouble reading from opened 'savefile'.";
  80     char * err_c = "Error loading game: "
  81                    "Unable to close opened 'savefile'.";
  82     char * savefile = "savefile";
  83     FILE * file;
  84     if (1 == world.interactive && 0 == access(savefile, F_OK))
  85     {
  86         file = fopen(savefile, "r");
  87         exit_err(0 == file, &world, err_o);
  88         if (   read_uint32_bigendian(file, &world.seed)
  89             || read_uint32_bigendian(file, &world.turn)
  90             || read_uint16_bigendian(file, &player.pos.y)
  91             || read_uint16_bigendian(file, &player.pos.x)
  92             || read_uint8(file, &player.hitpoints)
  93             || read_map_objects(&world, &world.monster, file)
  94             || read_map_objects(&world, &world.item,    file))
  95         {
  96             exit_err(1, &world, err_r);
  97         }
  98         exit_err(fclose(file), &world, err_c);
  99         player.pos.y--;
 100         player.pos.x--;
 101     }
 102
 103     /* For non-interactive mode, try to load world state from record file. */
 104     else
 105     {
 106         err_o = "Error loading record file: "
 107                 "Unable to open file 'record' for reading.";
 108         err_r = "Error loading record file: "
 109                 "Trouble reading from opened file 'record'.";
 110         char * recordfile = "record";
 111         world.turn = 1;
 112         if (0 == world.interactive)
 113         {
 114             file = fopen(recordfile, "r");
 115             exit_err(0 == file, &world, err_o);
 116             exit_err(read_uint32_bigendian(file, &world.seed), &world, err_r);
 117         }
 118
 119         /* For interactive-mode in newly started world, generate a start seed
 120          * from the current time.
 121          */
 122         else
 123         {
 124             world.seed = time(NULL);
 125
 126             err_x        = "Error recording new seed: "
 127                            "A file 'record' already exists, when it shouldn't.";
 128             err_o        = "Error recording new seed: "
 129                            "Unable to open 'record_tmp' file for writing.";
 130             char * err_w = "Error recording new seed: "
 131                            "Trouble writing to opened file 'record_tmp'.";
 132             err_c        = "Error recording new seed: "
 133                            "Unable to close opened file 'record_tmp'.";
 134             char * err_m = "Error recording new seed: "
 135                            "Unable to rename file 'record_tmp' to 'record'.";
 136             exit_err(!access(recordfile, F_OK), &world, err_x);
 137             file = fopen(recordfile_tmp, "w");
 138             exit_err(0 == file, &world, err_o);
 139             exit_err(write_uint32_bigendian(world.seed, file), &world, err_w);
 140             exit_err(fclose(file), &world, err_c);
 141             exit_err(rename(recordfile_tmp, recordfile), &world, err_m);
 142         }
 143     }
 144
 145
 146     /* Generate map from seed and, if newly generated world, start positions of
 147      * actors.
 148      */
 149     rrand_seed(world.seed);
 150     struct Map map = init_map();
 151     world.map = &map;
 152     set_cleanup_flag(CLEANUP_MAP);
 153     if (1 == world.turn)
 154     {
 155         player.pos = find_passable_pos(world.map);
 156         void * foo;
 157         foo = build_map_objects(&world, &world.monster, 1, 1 + rrand() % 27);
 158         foo = build_map_objects(&world, foo, 2, 1 + rrand() % 9);
 159         build_map_objects(&world, foo, 3, 1 + rrand() % 3);
 160         foo = build_map_objects(&world, &world.item, 4, 1 + rrand() % 3);
 161         build_map_objects(&world, foo, 5, 1 + rrand() % 3);
 162     }
 163
 164     /* Initialize window system and windows. */
 165     WINDOW * screen = initscr();
 166     set_cleanup_flag(CLEANUP_NCURSES);
 167     noecho();
 168     curs_set(0);
 169     keypad(screen, TRUE);
 170     raw();
 171     init_keybindings(&world);
 172     set_cleanup_flag(CLEANUP_KEYBINDINGS);
 173     struct WinMeta win_meta;
 174     char * err_winmem = "Error: Window drawing memory allocation failed.";
 175     exit_err(init_win_meta(screen, &win_meta), &world, err_winmem);
 176     struct Win win_keys = init_win(&win_meta, "Keys",
 177                                    0, 29, &world, draw_keys_win);
 178     struct Win win_info = init_win(&win_meta, "Info",
 179                                    2, 20, &world, draw_info_win);
 180     uint16_t height_logwin = win_meta.padframe.size.y
 181                              - (2 + win_info.frame.size.y);
 182     struct Win win_log = init_win(&win_meta, "Log",
 183                                   height_logwin, 20, &world, draw_log_win);
 184     uint16_t width_mapwin = win_meta.padframe.size.x - win_keys.frame.size.x
 185                              - win_log.frame.size.x - 2;
 186     struct Win win_map = init_win(&win_meta, "Map",
 187                                   0, width_mapwin, &world, draw_map_win);
 188     toggle_window(&win_meta, &win_keys);
 189     toggle_window(&win_meta, &win_map);
 190     toggle_window(&win_meta, &win_info);
 191     toggle_window(&win_meta, &win_log);
 192
 193     /* Replay mode. */
 194     int key;
 195     uint8_t quit_called = 0;
 196     uint8_t await_actions = 1;
 197     if (0 == world.interactive)
 198     {
 199         int action;
 200         while (1)
 201         {
 202             if (start_turn == world.turn)
 203             {
 204                 start_turn = 0;
 205             }
 206             if (0 == start_turn)
 207             {
 208                 exit_err(draw_all_wins(&win_meta), &world, err_winmem);
 209                 key = getch();
 210             }
 211             if (1 == await_actions
 212                 && (world.turn < start_turn
 213                     || key == get_action_key(world.keybindings,
 214                                              "wait / next turn")) )
 215             {
 216                 action = getc(file);
 217                 if (EOF == action)
 218                 {
 219                     start_turn = 0;
 220                     await_actions = 0;
 221                 }
 222                 else if (0 == action)
 223                 {
 224                     player_wait (&world);
 225                 }
 226                 else if (NORTH == action)
 227                 {
 228                     move_player(&world, NORTH);
 229                 }
 230                 else if (EAST  == action)
 231                 {
 232                     move_player(&world, EAST);
 233                 }
 234                 else if (SOUTH == action)
 235                 {
 236                     move_player(&world, SOUTH);
 237                 }
 238                 else if (WEST == action)
 239                 {
 240                     move_player(&world, WEST);
 241                 }
 242             }
 243             else
 244             {
 245                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 246                                              &win_map, &win_info, &win_log);
 247                 if (1 == quit_called)
 248                 {
 249                     err_c = "Error closing read 'record' file.";
 250                     exit_err(fclose(file), &world, err_c);
 251                     exit_game(&world);
 252                 }
 253             }
 254         }
 255     }
 256
 257     /* Interactive mode. */
 258     else
 259     {
 260         uint32_t last_turn = 0;
 261         while (1)
 262         {
 263             if (last_turn != world.turn)
 264             {
 265                 save_game(&world);
 266                 last_turn = world.turn;
 267             }
 268             if (1 == await_actions && 0 == player.hitpoints)
 269             {
 270                 await_actions = 0;
 271             }
 272             draw_all_wins (&win_meta);
 273             key = getch();
 274             if      (1 == await_actions
 275                      && key == get_action_key(world.keybindings,
 276                                               "player up"))
 277             {
 278                 move_player(&world, NORTH);
 279             }
 280             else if (1 == await_actions
 281                      && key == get_action_key(world.keybindings,
 282                                               "player right"))
 283             {
 284                 move_player(&world, EAST);
 285             }
 286             else if (1 == await_actions
 287                      && key == get_action_key(world.keybindings,
 288                                               "player down"))
 289             {
 290                 move_player(&world, SOUTH);
 291             }
 292             else if (1 == await_actions
 293                      && key == get_action_key(world.keybindings,
 294                                               "player left"))
 295             {
 296                 move_player(&world, WEST);
 297             }
 298             else if (1 == await_actions
 299                      && key == get_action_key(world.keybindings,
 300                                               "wait / next turn"))
 301             {
 302                 player_wait (&world);
 303             }
 304             else
 305             {
 306                 quit_called = meta_keys(key, &world, &win_meta, &win_keys,
 307                                              &win_map, &win_info, &win_log);
 308                 if (1 == quit_called)
 309                 {
 310                     exit_game(&world);
 311                 }
 312             }
 313         }
 314     }
 315 }